Bipod Adapter For Picatinny Rails and Harris Bipods. Tactical Bipod Adapter Rail Adapter For Harris Bipods and others compatible UTG bipods. This Bipod Adapter allows the attachment of a Harris Bipod to any Picatinny rail or ATK folding bipods. Will fit rifles equipped with Picatinny or quad rails. Bipod Adapter Constructed of hard anodized aircraft grade aluminum and steel. Bipod Adapter Also doubles as a sling swivel stud for quad rails. Bipod Adapter Comes with mounting tool. Bipod Adapter Fits handguards with a Picatinny or Weaver rail. Mounts To Most Weaver/ Picatinny MIL-STD 1913 Type Rails.